<template>
    <div class="shopcar-container">
        <div class="goods-list">
            <!-- 商品列表项区域 -->
            <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<mt-switch v-model="$store.getters.getGoodsSelected[item.id]"
                        @change="selectedChanged(item.id, $store.getters.getGoodsSelected[item.id])"></mt-switch>
                        <img ：src="item.thumb_path" alt="">
                        <div class="info">
                            <h1>{{item.title}}</h1>
                            <p>
                                <span class="price">￥{{item.sell_price}}</span>
                                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                                <!-- 问题：如何从购物车中获取商品的数量 -->
                                <!-- 1. 我们可以先创建一个空对象，然后循环购物车中所有商品的数据，把当前循环这条商品的id，作为对象的属性名，count值作为对象的属性值，这样，当把所有的商品循环一遍，就会得到一个对象{88:3,89:1,90:4} -->

                                <a href="#" @click.prevent="remove(item.id, i)">删除</a>
                            </p>
                        </div>
					</div>
				</div>
		    </div>

            <!-- 测试数据 -->
            <div class="mui-card" >
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<mt-switch ></mt-switch>
                        <img src="../../images/n1.jpg" alt="">
                        <div class="info">
                            <h1>小米(Mi)小米Note 16G双网通版</h1>
                            <p>
                                <span class="price">￥2199</span>
                                <numbox></numbox>
                                <a href="#">删除</a>
                            </p>
                        </div>
					</div>
				</div>
		    </div>
        </div>
        
        <!-- 结算区域 -->
        <div class="mui-card">
				<div class="mui-card-content">
					<div class="mui-card-content-inner jiesuan">
						<div class="left">
                            <p>总计(不含运费)</p>
                            <p>已勾选商品：<span class="red">{{$store.getters.getGoodsCountAndAmount.count}}</span>件，总价￥<span class="red">{{$store.getters.getGoodsCountAndAmount.amount}}</span></p>
                        </div>
                        <mt-button type="danger">去结算</mt-button>
					</div>
                    
				</div>
		</div>
        
        <p>{ $store.getters.getGoodsSelected }</p>

    </div>
</template>

<script>

import numbox from '../subcomponents/shopcar_numbox.vue'

export default {
    data(){
        return {
            goodslist:[]  //购物车中所有商品的数据
        }
    },
    created(){
        this.getGoodsList();
    },
    methods:{
        
        getGoodsList(){ //获取购物车商品列表
            // 1. 获取store中所有的商品的Id，然后拼接处一个用逗号分隔的字符串
            var idArr = [];
            this.$store.state.car.forEach(item => idArr.push(item.id));
            // 如果购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
            if(idArr.length<=0){
                return ;
            }
            this.$http.get('api/goods/getshopcarlist'+idArr.join(',')).then(result => {
                if(result.body.status ===0 ){
                    this.goodslist = result.body.message;
                }
            })
        },
        remove(id,index){  //点击删除，把商品从store中根据传递的Id删除，同时把当前组件中的goodslist中，对应要删除的那个商品，使用index来删除
            this.goodslist.splice(index,1);
            this.$store.commit('removeFormCar',id);
        },
        selectedChanged(id,val){
            // 每当点击开挂，把最新的开关状态，同步到store中
            console.log(id+"---"+val);
            this.$store.commit("updateGoodsSelected",{id,selected:val});
        }
    },
    components:{
        numbox
    }
}
</script>

<style lang="scss" scoped>
.shopcar-container{
    background-color: #eee;
    overflow: hidden;
    .goods-list{
        .mui-card-content-inner{
            display: flex;
            align-items: center;
            img{
                width: 60px;
                height: 60px;
            }
            h1{
                font-size: 14px;
            }
            .info{
                display: flex;
                flex-direction: column;
                justify-content: space-between;
                .price{
                    color:red;
                    font-weight: bold;
                }
            }
        }
        
    }
    .jiesuan{
        display: flex;
        justify-content: space-between;
        align-items: center;
        .red{
            color:red;
            font-weight: bold;
            font-size:16px;
        }
    }
}
</style>
